Prism-shaped element for seating furniture



FIG. 1 is a perspective view of a prism-shaped element for seating furniture showing a first embodiment of my new design;

FIG. 2 is a perspective view of a prism-shaped element for seating furniture showing a second embodiment; and,

FIG. 3 is an exploded, perspective view of the element shown in FIG. 2.

The surfaces or portions of the article not shown in the drawing or described in the specification form no part of the claimed design.

The broken line showing of the support structure in FIGS. 1 through 3 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a prism-shaped element for seating furniture, as shown and described. 